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| Analysis of the Reasonable Support Length for Multi-spans Submerged Floating Tunnel |
| QIN Yin-gang1, ZHOU Sheng-guo2, ZHOU Xiao-Jun1 |
| 1. Southwest Jiaotong University, Chengdu, Sichuan 610031, China; 2. Chongqing Jiangbeizui CBD Invest-development Co-Corporation, Chongqing 400024, China |
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Abstract Research purposes: Submerged floating tunnel is a new type of fixed transport facility for crossing waterways and always needs support system between the banks to make it stable when it crosses broad water area. It not only affects the structure's stability but also affects the building coat whether the support system is set up reasonably or not.
Research Conclusions: The current velocity and the vortex frequency influence the support system length mostly. The unstable criterion of the support of the high order for submerged floating tunnel is larger than that for low one. The Melnikov method can be used for judging whether the allocation of support system is reasonable or not.
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Received: 08 January 2008
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2008, Vol. 25 
